The DIERCON Portable Mini Water Purifier Straw is an essential tool for any survivalist or outdoor enthusiast. Weighing only 2 ounces, it is compact and easy to carry in your backpack or pocket. The straw utilizes a 0.1-micron ultrafiltration membrane and activated carbon filter to remove 99.9999% of waterborne bacteria and 99.99% of waterborne protozoan parasites. With a lifespan of up to 1500 litres, it is perfect for camping, hiking, and emergencies. Stay hydrated and healthy with the DIERCON Portable Mini Water Purifier Straw.